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Income taxes - Non Capital Losses Carry Forwards (Detail) $ in Thousands | Dec. 31, 2021 USD ($)
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Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | $ 2,024,463
Tax credits | 136,985
Canada |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 678,881
U.S. |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 1,345,582
2022—2026 |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 11,283
Tax credits | 4,476
2022—2026 | Canada |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 0
2022—2026 | U.S. |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 11,283
2027+ |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 2,013,180
Tax credits | 132,509
2027+ | Canada |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | 678,881
2027+ | U.S. |
Capital Loss Carryforwards [Line Items] |
Total non-capital loss carryforward | $ 1,334,299

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319 + Details
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